I woke up this morning with the notion that we had far too many mobile phone chargers constantly plugged in in our house. I have one always plugged in by the bed and there were two in the kitchen and likely a couple more in kids bedrooms.
Goodness me I exclaimed! You can picture it I’m sure. These things consume power even when they are not charging a phone. How could we be so environmentally unfriendly?
I’ve dug into this and although the methodology wouldn’t pass scrutiny for a scientific paper I’ve come up with some conclusions. Disappointing conclusions.
According to an article I found on the Beeb a mobile phone charger plugged into a power socket but without a mobile phone connected to it consumes 0.01KWh a day. That would require a 115 microWatt power source.
Also according to the Beeb (fair play) there were by October 2012 six billion mobile phones in the world. If there was one plugged in charger per mobile phone then assuming they were all disconnected from their phones at the same time they would consume 6,000,000,000 c 115microWatt or around 697KW.
That means that one of the generators we have for our Newark data centre could power the whole world’s mobile chargers in their passive state (if that’s the right terminology). Interesting eh? 🙂
All a bit disappointing mind you. I was hoping to come up with some shock horror revelation that would enable me to quantify the power consumption in terms of numbers of nuclear power stations required, but I can’t.
Nevertheless I’m going to instil a discipline at home of unplugging these chargers when not in use. Except the one by the bed that is – it’s a bit awkward to get around the back of the bedside table.